Feed-water heater for locomotives.



P. H. GLARK & GL R. SMITH. y FEED WATER HEATER PoR LoGoMoTIvEs.'

AIILIOATION FILED NOV. 26, 1913.

Patented July 2s, 1,914.

3 .SHEBTSfSHBBT l.

F. H. CLARK & G. R. SMITH.

FEED WATER HEATER POR LOCOMOTIVES. APPLIGATION FILED Nov. 2s', 191s.

1 ,'1 04,776. Patented July 28,1914

3 SHEETS-SHEET 2.

Gual/nata P. H. CLARK & G. R. SMITH. FEED WATEE HEATER EOE LocoMoTIVI-s.

AEPLlCATIoN FILED Nov. ze. 1913.

f Patented July 2s, 1914.

3 SHEETS-SHEET 3.

' s'rATEs PATENT OFFICE.

FnANxH. man, or New Yoax, N. Y., AND GEORGE n. SMITH, or ion'rsiueirrn,

VIRGINIA.;

FEED-WATER HEATER FOB LOCOMOTIVES. l

' Specification of Letters Batent. Patented July 28, 1914.

` Mutation sied Novemper ze, 1913, serial No. 803,354.

To all whom t may concern.' f

Be it known that we, FRANK H. CLARK and GEORGE R. SMITH, citizens of the United i States, residingat New York, in the county of New York and .State of New York, and

' -as a consequence the exhaust steam leaving the cylinders has a temperature of over 300 F. which in the present locomotive practice is wasted.

The object of our invention is to` utilize this heat of the exhaust to heat the feed water before it, enters the boiler, without increasing the back pressure onthe cylinders and without interfering with the draft.

A further object of our invention is to so place the feed water heater that the exhaust steam'will be delivered to it at its highest possible temperature, and at the same timel having it so located as to utilize what has heretofore been waste space on a locomotive.

A further object of our invention is to vso construct theheater that it is easily accessible for the purpose of cleaningor repairing the same, and also to construct it in a number of units which are separately removable and which are interchangeable.

With the foregoing and other objects in view our invention consists in certain constructions, combinations and arrangements of parts the preferred form of which will be first described in connection with the accompanying drawings and 'then the invention particularly pointed out inv the ,appended claims.

Referring to the accompanying drawings wherein the same reference numeral is used to designate the same part wherever it occurs: Figure 1 is a side elevation of the forwardportion of a standard type of locomotive showing the sameas equipped with the preferred form of our invention; Fig. 2 is a detail perspective view of one set ofthe heating tubes; Fig. 3 is a front elevation partly iny section of the saddle showing the feed water heater in place therein, Fig. 4 is a top plan view of the saddle with one ofthe cylinders partly broken away; Fig. 5 is a cross section of a set of heating tubes as shown in Fig. 2 and illustrating our preferred manner of holding them in proper relative position at their rear ends; Fig. 6 is a section taken on line 6 6 of Fig. 3 and looking in the `direction of the arrow, and Fig. 7 is aseotion taken on line 7-7 of Fig. 6. l 10 designates the cylinders of a standard type of locomotive, 11 the steam-chests, 12 y the saddle, 13. the steam inlet pipes to the lsteam chests, 14 the exhaust nozzle in the smoke box 15, and 16 the exhaust passages into the saddle. All theseI parts except the saddle and the exhaust passages are shown to be of...-standardfdesign.

Instead of providing the saddle with-a passage' way to. convey the exhaust steam from the exhaust outlet 16 to the nozzle 14, we, form the saddle into a hollow box into lwhich the steam is delivered by the exhaustv passages 16, and fromy which it is discharged through the nozzle 14.. The hollow box in the saddle forms the casing of the feed water heater and into the casing thusy formed we introduce any suitable means for carrying the feed water therethrough, whereby it can be heated by the exhaust steam in the casing, It isto b e noted that by thus utilizing the saddle as the casing of the heater, we utilize what has hereto-fore been wastespace on a locomotive, and at the saine time so place the heater that it does not interfere with the draft from theire box, as would be the case were it placed in the smoke-box. Furthermore because of the size of the casing available for the heater we are enabledto place sufficient heating surface therein to obtain the maximum etliciency for the heatenrwh' out increasing the back pressure on the cylinders and at the same time we utilize the y maximum temperature of the exhaust steam as it is delivered" from the cylinders.

Preferably and as shown we build the heater in a series of units which can be readily and independently removed from the saddle, for the purposes of cleaning, repairing, etc., and also form each unit identical with the others, so that they are interchangeable. l

In the particular form of our invention sho'wn, the front face of the saddle is formed ka plate 2O cruciform in shape as inserted between the tubes and have provided a pair of straps 21 extending overthe tubes and secured to the plate by screws 22.

The front face of each header plate 18 is provided with a pair of kparallel ribs 23 which extendl between the ends of one pair` of tubes and the other rib extending between the-other pair. Each of the header plates is provided with the rib. 24 extending around the same adjacent its edges, and

25 is a cover 'plate having the rib 26 adapted to register with the rib 24 and' a pair of ribs 27 registering with thepair of parallelribs 23. whereby when the cover plate is secured in position on theheader plate three chambers will be formed between them with which the U tubes connect whereby the` feed water is caused to circulate through the .tubes as will be obvious. The cover plates l and header plates are secured to the face of the saddle by the bolts 28 and also pass along bolts 29 through the cover plate, the header plate, the cruciform block 20 and secured into the rear` inner face` of the saddle casing, so that all parts are rigid.y

The feed water pipe 30 is connected to one side of one of the heater units as shown in Fig. 3, and is led from one unit to the other by the U pipes 31 connecting them together. The feed water after being heated is fed to the boiler through the ipe 32. It will be obvious that the way in Aw ich the units are connected together by the U pipes may be varied as desired, and that for instance all the unitsinay'be connected together so as to make a single heater to heat the water from a single feed water pipe instead of forming twoI heaters one for the feed water pipe on each side as shown.

We realize that considerable variationis possible inthe details of construction herein shown and described, lwithout departing from the ,spirit of our invention, and we do not intend ,to limit vourselves thereto, except as pointed out in thefollowing claims, in which itis our intention to claim all the novelty inherent in the structure shown and described as broadly as the state 'of the art will permit.

Having thusI described our invention what we claim asnew and desire to securel by Letters Patent is:

1. The combination 'with a locomotive having itssaddle formed into a chamber in to which the cylinders directly exhaust and from which the exhaust nozzle leads, and a feed water heater located in said chamber between said exhaust ports and nozzle.

2. The combination with a vlocomotive having its saddle formed into a chamber into which the .cylinders directly exhaust and from which the exhaust nozzle leads, and a feed water heater formed of a plural# ity of independently removable and interhangeable units located in the said cham- 3. The combination with a locomotive having its -saddle formed into a chamber into which the cylinders directly exhaust and from which the exhaustynozzleyleads, the cross section of the steam space ,of the chamber being greater than the cross section of either the exhaust passages of the cylinder or the nozzle.

4. The Acombination with a llocomotive having its saddle formed into a chamber with which the exhaust ports and nozzle connect, and a feed water heater in said chamber composed of a plurality of serially connected units the last unit of the series being adjacent an exhaust port.

5. 'The combination withv a locomotive haring its saddle formed into a chamber with which the exhaust ports and nozzle connect, and a yfeed water heater in said chamber composed of two sets of serially connected units, the first4 unit of each set being adjacent an exhaust port.

In testimony whereof we aiiix our signatures in presence of two witnesses.

FRANK H. CLARK. GEORGE R. SMITH.

Witnesses:

EMILY F. CAMP, FRANCIS M. PHELPS. 

